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4 vulnerabilities found for IGEL OS 11 by IGEL
CVE-2026-82018 (GCVE-0-2026-82018)
Vulnerability from nvd – Published: 2026-08-28 21:11 – Updated: 2026-08-28 21:11
VLAI
EPSS
VEX
Title
IGEL OS 12 / 11 Secure Boot Bypass via Unsigned igel.conf File
Summary
IGEL OS 12 before 12.9.0, 12.8.3 LTS and IGEL OS 11 before 11.11.150 contain a secure boot bypass vulnerability in the GRUB boot stage that allows physically present attackers to gain unauthorized root access by placing an unsigned empty file named igel.conf on a partition. Attackers can exploit GRUB's fail-open signature verification behavior to drop into an interactive GRUB prompt, then boot the device's own kernel with additional command-line arguments to obtain a root shell with the disk unlocked while leaving TPM PCR values unaltered.
Severity
6.1 (Medium)
CWE
- CWE-636 - Not Failing Securely ('Failing Open')
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://kb.igel.com/en/security-safety/current/is… | vendor-advisorypatch |
| https://blog.amberwolf.com/blog/2026/august/thin-… | technical-description |
| https://media.defcon.org/DEF%20CON%2034/DEF%20CON… | |
| https://www.vulncheck.com/advisories/igel-os-12-1… | third-party-advisory |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| IGEL | IGEL OS 12 |
Affected:
12.0.0 , ≤ 12.8.2
(semver)
Unaffected: 12.8.3 (semver) Unaffected: 12.9.0 (semver) |
|
| IGEL | IGEL OS 11 |
Affected:
11.0.0 , < 11.11.150
(semver)
|
Date Public
2026-06-17 00:00
{
"containers": {
"cna": {
"affected": [
{
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"product": "IGEL OS 12",
"vendor": "IGEL",
"versions": [
{
"lessThanOrEqual": "12.8.2",
"status": "affected",
"version": "12.0.0",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "12.8.3",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "12.9.0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "affected",
"product": "IGEL OS 11",
"vendor": "IGEL",
"versions": [
{
"lessThan": "11.11.150",
"status": "affected",
"version": "11.0.0",
"versionType": "semver"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "Darren McDonald from AmberWolf"
}
],
"datePublic": "2026-06-17T00:00:00.000Z",
"descriptions": [
{
"lang": "en",
"value": "IGEL OS 12 before 12.9.0, 12.8.3 LTS and IGEL OS 11 before 11.11.150 contain a secure boot bypass vulnerability in the GRUB boot stage that allows physically present attackers to gain unauthorized root access by placing an unsigned empty file named igel.conf on a partition. Attackers can exploit GRUB\u0027s fail-open signature verification behavior to drop into an interactive GRUB prompt, then boot the device\u0027s own kernel with additional command-line arguments to obtain a root shell with the disk unlocked while leaving TPM PCR values unaltered."
}
],
"metrics": [
{
"cvssV4_0": {
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"attackVector": "PHYSICAL",
"baseScore": 6.8,
"baseSeverity": "MEDIUM",
"exploitMaturity": "NOT_DEFINED",
"privilegesRequired": "NONE",
"providerUrgency": "NOT_DEFINED",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "NONE",
"valueDensity": "NOT_DEFINED",
"vectorString": "CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N",
"version": "4.0",
"vulnAvailabilityImpact": "NONE",
"vulnConfidentialityImpact": "HIGH",
"vulnIntegrityImpact": "HIGH",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
},
{
"cvssV3_1": {
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"attackVector": "PHYSICAL",
"availabilityImpact": "NONE",
"baseScore": 6.1,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
"version": "3.1"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
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}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-636",
"description": "Not Failing Securely (\u0027Failing Open\u0027)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
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},
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{
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],
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},
{
"name": "AmberWolf Blog",
"tags": [
"technical-description"
],
"url": "https://blog.amberwolf.com/blog/2026/august/thin-client-thin-crypto-overview/"
},
{
"name": "DEF CON 34 Presentation",
"url": "https://media.defcon.org/DEF%20CON%2034/DEF%20CON%2034%20presentations/DEF%20CON%2034%20presentations/DEF%20CON%2034%20-%20Darren%20McDonald%20-%20Thin%20Client%20Thin%20Crypto%20-%20Bypassing%20Full-Desk%20Encryption%20Across%20Three%20Major%20Thin%20Clients%20Vendors%20without%20Breaking%20a%20Ci.pdf"
},
{
"tags": [
"third-party-advisory"
],
"url": "https://www.vulncheck.com/advisories/igel-os-12-11-secure-boot-bypass-via-unsigned-igel-conf-file"
}
],
"source": {
"discovery": "EXTERNAL"
},
"title": "IGEL OS 12 / 11 Secure Boot Bypass via Unsigned igel.conf File",
"x_generator": {
"engine": "vulncheck"
}
}
},
"cveMetadata": {
"assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
"assignerShortName": "VulnCheck",
"cveId": "CVE-2026-82018",
"datePublished": "2026-08-28T21:11:24.911Z",
"dateReserved": "2026-08-27T21:39:20.459Z",
"dateUpdated": "2026-08-28T21:11:43.223Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-82017 (GCVE-0-2026-82017)
Vulnerability from nvd – Published: 2026-08-28 21:09 – Updated: 2026-08-28 21:09
VLAI
EPSS
VEX
Title
IGEL OS 12 / 11 Boot Registry Parameter Injection via Unsigned Configuration Area
Summary
IGEL OS 12 before 12.7.6 and IGEL OS 11 before 11.11.150 contain a boot registry parameter injection vulnerability that allows attackers with physical access to execute arbitrary Linux loader parameters by writing to an unencrypted and unsigned configuration area read by the signed bootloader. Attackers can inject malicious kernel command line parameters that execute with boot environment privileges without triggering TPM PCR measurement failures, as the attack does not modify the measured boot code.
Severity
CWE
- CWE-345 - Insufficient Verification of Data Authenticity
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://kb.igel.com/en/security-safety/current/is… | vendor-advisorypatch |
| https://blog.amberwolf.com/blog/2026/august/thin-… | technical-description |
| https://media.defcon.org/DEF%20CON%2034/DEF%20CON… | |
| https://github.com/AmberWolfCyber/DEFCON34-ThinCl… | exploit |
| https://www.vulncheck.com/advisories/igel-os-12-1… | third-party-advisory |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| IGEL | IGEL OS 12 |
Affected:
12.0.0 , < 12.7.6
(semver)
|
|
| IGEL | IGEL OS 11 |
Affected:
11.0.0 , < 11.11.150
(semver)
|
Date Public
2026-06-16 00:00
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "affected",
"product": "IGEL OS 12",
"vendor": "IGEL",
"versions": [
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"status": "affected",
"version": "12.0.0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "affected",
"product": "IGEL OS 11",
"vendor": "IGEL",
"versions": [
{
"lessThan": "11.11.150",
"status": "affected",
"version": "11.0.0",
"versionType": "semver"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "reporter",
"value": "Darren McDonald from AmberWolf"
}
],
"datePublic": "2026-06-16T00:00:00.000Z",
"descriptions": [
{
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"value": "IGEL OS 12 before 12.7.6 and IGEL OS 11 before 11.11.150 contain a boot registry parameter injection vulnerability that allows attackers with physical access to execute arbitrary Linux loader parameters by writing to an unencrypted and unsigned configuration area read by the signed bootloader. Attackers can inject malicious kernel command line parameters that execute with boot environment privileges without triggering TPM PCR measurement failures, as the attack does not modify the measured boot code."
}
],
"metrics": [
{
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"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"attackVector": "PHYSICAL",
"baseScore": 8.6,
"baseSeverity": "HIGH",
"exploitMaturity": "NOT_DEFINED",
"privilegesRequired": "NONE",
"providerUrgency": "NOT_DEFINED",
"subAvailabilityImpact": "HIGH",
"subConfidentialityImpact": "HIGH",
"subIntegrityImpact": "HIGH",
"userInteraction": "NONE",
"valueDensity": "NOT_DEFINED",
"vectorString": "CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H",
"version": "4.0",
"vulnAvailabilityImpact": "HIGH",
"vulnConfidentialityImpact": "HIGH",
"vulnIntegrityImpact": "HIGH",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
},
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "PHYSICAL",
"availabilityImpact": "HIGH",
"baseScore": 7.6,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H",
"version": "3.1"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-345",
"description": "Insufficient Verification of Data Authenticity",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
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],
"url": "https://kb.igel.com/en/security-safety/current/isn-2026-19-code-execution-via-boot-registry"
},
{
"name": "AmberWolf Blog",
"tags": [
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],
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{
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},
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"tags": [
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"url": "https://github.com/AmberWolfCyber/DEFCON34-ThinClientThinCrypto/blob/main/scripts/igel/inject_bootreg.py"
},
{
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"third-party-advisory"
],
"url": "https://www.vulncheck.com/advisories/igel-os-12-11-boot-registry-parameter-injection-via-unsigned-configuration-area"
}
],
"source": {
"discovery": "INTERNAL"
},
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"x_generator": {
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CVE-2026-82018 (GCVE-0-2026-82018)
Vulnerability from cvelistv5 – Published: 2026-08-28 21:11 – Updated: 2026-08-28 21:11
VLAI
EPSS
VEX
Title
IGEL OS 12 / 11 Secure Boot Bypass via Unsigned igel.conf File
Summary
IGEL OS 12 before 12.9.0, 12.8.3 LTS and IGEL OS 11 before 11.11.150 contain a secure boot bypass vulnerability in the GRUB boot stage that allows physically present attackers to gain unauthorized root access by placing an unsigned empty file named igel.conf on a partition. Attackers can exploit GRUB's fail-open signature verification behavior to drop into an interactive GRUB prompt, then boot the device's own kernel with additional command-line arguments to obtain a root shell with the disk unlocked while leaving TPM PCR values unaltered.
Severity
6.1 (Medium)
CWE
- CWE-636 - Not Failing Securely ('Failing Open')
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://kb.igel.com/en/security-safety/current/is… | vendor-advisorypatch |
| https://blog.amberwolf.com/blog/2026/august/thin-… | technical-description |
| https://media.defcon.org/DEF%20CON%2034/DEF%20CON… | |
| https://www.vulncheck.com/advisories/igel-os-12-1… | third-party-advisory |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| IGEL | IGEL OS 12 |
Affected:
12.0.0 , ≤ 12.8.2
(semver)
Unaffected: 12.8.3 (semver) Unaffected: 12.9.0 (semver) |
|
| IGEL | IGEL OS 11 |
Affected:
11.0.0 , < 11.11.150
(semver)
|
Date Public
2026-06-17 00:00
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "affected",
"product": "IGEL OS 12",
"vendor": "IGEL",
"versions": [
{
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"status": "affected",
"version": "12.0.0",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "12.8.3",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "12.9.0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "affected",
"product": "IGEL OS 11",
"vendor": "IGEL",
"versions": [
{
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"status": "affected",
"version": "11.0.0",
"versionType": "semver"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "Darren McDonald from AmberWolf"
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"descriptions": [
{
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}
],
"metrics": [
{
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"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
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"providerUrgency": "NOT_DEFINED",
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"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "NONE",
"valueDensity": "NOT_DEFINED",
"vectorString": "CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N",
"version": "4.0",
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"vulnConfidentialityImpact": "HIGH",
"vulnIntegrityImpact": "HIGH",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
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"scenarios": [
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},
{
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"baseScore": 6.1,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
"version": "3.1"
},
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},
{
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],
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},
{
"tags": [
"third-party-advisory"
],
"url": "https://www.vulncheck.com/advisories/igel-os-12-11-secure-boot-bypass-via-unsigned-igel-conf-file"
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],
"source": {
"discovery": "EXTERNAL"
},
"title": "IGEL OS 12 / 11 Secure Boot Bypass via Unsigned igel.conf File",
"x_generator": {
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}
}
},
"cveMetadata": {
"assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
"assignerShortName": "VulnCheck",
"cveId": "CVE-2026-82018",
"datePublished": "2026-08-28T21:11:24.911Z",
"dateReserved": "2026-08-27T21:39:20.459Z",
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"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
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}
CVE-2026-82017 (GCVE-0-2026-82017)
Vulnerability from cvelistv5 – Published: 2026-08-28 21:09 – Updated: 2026-08-28 21:09
VLAI
EPSS
VEX
Title
IGEL OS 12 / 11 Boot Registry Parameter Injection via Unsigned Configuration Area
Summary
IGEL OS 12 before 12.7.6 and IGEL OS 11 before 11.11.150 contain a boot registry parameter injection vulnerability that allows attackers with physical access to execute arbitrary Linux loader parameters by writing to an unencrypted and unsigned configuration area read by the signed bootloader. Attackers can inject malicious kernel command line parameters that execute with boot environment privileges without triggering TPM PCR measurement failures, as the attack does not modify the measured boot code.
Severity
CWE
- CWE-345 - Insufficient Verification of Data Authenticity
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://kb.igel.com/en/security-safety/current/is… | vendor-advisorypatch |
| https://blog.amberwolf.com/blog/2026/august/thin-… | technical-description |
| https://media.defcon.org/DEF%20CON%2034/DEF%20CON… | |
| https://github.com/AmberWolfCyber/DEFCON34-ThinCl… | exploit |
| https://www.vulncheck.com/advisories/igel-os-12-1… | third-party-advisory |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| IGEL | IGEL OS 12 |
Affected:
12.0.0 , < 12.7.6
(semver)
|
|
| IGEL | IGEL OS 11 |
Affected:
11.0.0 , < 11.11.150
(semver)
|
Date Public
2026-06-16 00:00
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "affected",
"product": "IGEL OS 12",
"vendor": "IGEL",
"versions": [
{
"lessThan": "12.7.6",
"status": "affected",
"version": "12.0.0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "affected",
"product": "IGEL OS 11",
"vendor": "IGEL",
"versions": [
{
"lessThan": "11.11.150",
"status": "affected",
"version": "11.0.0",
"versionType": "semver"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "reporter",
"value": "Darren McDonald from AmberWolf"
}
],
"datePublic": "2026-06-16T00:00:00.000Z",
"descriptions": [
{
"lang": "en",
"value": "IGEL OS 12 before 12.7.6 and IGEL OS 11 before 11.11.150 contain a boot registry parameter injection vulnerability that allows attackers with physical access to execute arbitrary Linux loader parameters by writing to an unencrypted and unsigned configuration area read by the signed bootloader. Attackers can inject malicious kernel command line parameters that execute with boot environment privileges without triggering TPM PCR measurement failures, as the attack does not modify the measured boot code."
}
],
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"subConfidentialityImpact": "HIGH",
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"valueDensity": "NOT_DEFINED",
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"problemTypes": [
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"descriptions": [
{
"cweId": "CWE-345",
"description": "Insufficient Verification of Data Authenticity",
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"providerMetadata": {
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"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
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"url": "https://kb.igel.com/en/security-safety/current/isn-2026-19-code-execution-via-boot-registry"
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},
{
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},
{
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"url": "https://github.com/AmberWolfCyber/DEFCON34-ThinClientThinCrypto/blob/main/scripts/igel/inject_bootreg.py"
},
{
"tags": [
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],
"url": "https://www.vulncheck.com/advisories/igel-os-12-11-boot-registry-parameter-injection-via-unsigned-configuration-area"
}
],
"source": {
"discovery": "INTERNAL"
},
"title": "IGEL OS 12 / 11 Boot Registry Parameter Injection via Unsigned Configuration Area",
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}
},
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"datePublished": "2026-08-28T21:09:01.253Z",
"dateReserved": "2026-08-27T21:39:20.459Z",
"dateUpdated": "2026-08-28T21:09:01.253Z",
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